Press



' V 4 1,538,885 J. J. BERRIGAN PRESS 2 Sheets-She et 1 II I E E I E E I I E RY/dnior.

" JQQ N Patented May 26, 1925. J UNITED STATES JOHN J. BERRIGAN, or CHICAGO, ILLINO PATE I'S, ASSIGNOBLOF ONE-THIRD TO JOHN B,

BER-RIG-AN AND ONE-THIRD To KATHERYNE. 1P}: MALON, Born on o-HIoAGo,

ILLINOIS.

PRESS. I

Application filed May. 7',

To all whomit may concern Be it known that I, JOHN J. BEBPIGAN, a citizenof the United States, residing at Chicago, in the county of Cook-and State of Illinois, have invented a certain new and useful Improvements in Presses, of which the following is aspecification.

This invention relates to a press and to a bag-like container for use with said press. a It has for one object to provide means whereby material located within the different compartments of a press may to some extent move from one to the other to permit, equalization. It has for: another object to provide means for equalizing and standardizing the size and shape of the cake formed in the press. Another object is to provide in a single acting press means for permitting double action. Other objects will appear from time to time throughout the specification and claims. .1 i

.My invention is illustrated more or less diagrammatically in the accompanying drawings, wherein Figure 1 is a side elevation showing the press open and filled.

Figure 2 is a similar view showing the press partly closed. Figure 0 1s a view similar to Figures 1 and 2 showing the plates of the press moved laterally to permit the second stage of the pressing operation- Figure 4 is a similar view showing the press closed at the end of the pressing operation.

Figure 5 is an enlarged detailed view showing the press open as in Figure 1 with parts in section.

Figure 6 is a vertical cross section of one of the bags empty and open at its bottom.

Figure is an elevation showing one of the plates of the press. v

Like parts are designated by like charactors throughout.

A is one of the side frame members of a press supported at one end on a frame memher A and at its other end it may be supported ona similar member. It is provided with a series of perforations A adapted to receivea holding pin A B is a movable platen supported on the side members Aand adapted to move therealong. It is connected to a piston rod B? which is itself connected to a piston in a hydraulic cylinder, by means of which the platen B may be moved, in and out. .13

1924. Serial No. 711,548.

is a rod mountedin .thc platen B. As here shown there will be two of such rods, al-:

though this number might be varied.

C is a second platen carried on the side members A and perforated to permit the i rods B to pass through it. It is provided in its sides adjacent therods B with per:

forations C 1 For some purposeslater described these perforations are brought into register with one of the perforations B in 5 the rods B I y, D, D are plates mounted in thepress, preferably provided on their sides with notches D to engage the side members A for the support of the plates. perforated as at D to permit the filling connections to pass through. Each of the plates is provided in its top with abroad notch like portion D within which the bags may rest. The plates D are preferably made up of three main parts-a central sheet D and a pair of perforated sheets D Thus the space between theplates D D is open at the bottom and throughout most of the height of the plates, when material is 30 pressed, liquid can flow through the per-- forated plates and down between them and the inner plates whereby discharge of material from press is provided. a I, I

When the press has been filled, pressure 1 is applied to the platen connected to the hydraulic cylinder and it is forced laterally toward the other platen, the length of the. stroke of the hydraulic piston. During this operation the rods B pass freely through the platen C. When this movement is complete one of the perforations B in the shaft B is in register with the perforation; C in the platen C'.

The movement of the hydraulic piston is i piston is again reversed and the second step i of the pressing operation is carriedout, the platen C being held against the pin A in the advance position. This backward and forward operation may be repeated a num- 7 her of times and by means ofthis arrange 10 They are are of such size that the bag hangs over one,

plate, half of it being on each side of that plate and one double bag thus serves to containall of the material which is pressed be tween three plates. 1

E is a bag. It is provided with perforations E t by means of which it is connected to other bags to permit material to be pressed to b pumped into them. Ma-

terial is preferably pumped from one end of' the press and first fills one bag and flows from it to the next and so on until all of the bags have been filled. The connection betweenthe two halves of theJbag as it lies over'a plate, as shown in detail in Figure 5, is free over the top of the plate as well as over the perforation. In fastening the bags together in the press any suitable connection -may 'beused. I use a threaded thimble E which co-operates with the nut E 'to hold the edges of the bag together so that material may pass freely from one bag to the other.

The bag is opened at each end and is pro vided on each side of each end with a pocket-like portion F'within which aplate F is removably positioned. In order to close the bottom of-tl1e-bagbefore' filling the press, the two plates at its end are brought together, the 'body of the bag isv rolled upward by the :plates as shown espec'ially in Figure 5 and-in this position the plates are wedged against the main plates of thepress-and pressure from within the bag merely serves to make the seal tighter. lVhen it is desired todisc'hargethe contents of the bag after pressing,thepress is opened andthe bag is readily unwound from about the plate andthe material falls out.

In the operation of pressing it has been found in the past that an unevenly shaped cake is "frequently formed where the -material being pressed is contained in bags. If single bags are used, the material may be pressed "from one end, usually the bottom of the bag, upward toward the top and the cake .will thicker at the top than bottom. This is undesirable as it makes discharge from the press difficult. In the present invention as the platen first moves in thepressing direction as shown in Fig ure 2 material is pressed only in the bags closest to the platen." The bag closest to the platen is pressed first and the other bags are not pressed until a considerable degree of compression has been produced in this bag,- and then as the platen moves in the pressing direction, the degree of pressure exerted upon the bags is in proportion to their closeness to the moving platen. During this operation by the use of the double bag circulation between the two halves of the bag is permitted and as the compression becomes increased in one half of the bagthe material tends to mov upward and can move over the :top of the plate and so into the other half of the bag. Thus an equalization between the bags takes place.

hen now the left hand platen, as shown in the drawings is moved in the pressing direction, as shown in Figure 3, pressure is applied to the bags closest to it and the same process takes place. The materialmoves from one half of a bag to the other and tosome extent circulates between the bagsthemselves. ,During this operation also the plates which were first compressed are to some extent opened out because the platen moves away from themand they are drawn after it by means of chains which hold tlieintogetlier. Vith each alternate compressing movement of the two platens a higher degree of compression is established throughout the entire press but an equalization is also permitted by reason of the movement of the material between the bags and also by the backward and forward movement of the bags and plates and press ing element as a whole. By means of this arrangement and process I am able greatly to reduce the wear and strain on the bags themselves and I am also able to produce a cake of uniform size and shape so that discharge from the press is easy and satisfactory.

While I have shown an operative device,

still-it will be obvious that many changes 1 in size, shape and arrangement of parts'may b made without departing materially from the spirit of my invention; and I wish, therefore, that my showing be taken as in a sense diagran'unatic.

IVhere in'this specification and the claims I use the expression two part bags or two part filter bags I mean that the bag is made having-two mainparts one of each partbeing adapted to lie between adjacent 1 partitions and to serve generally as though it were a single bag, but, forming part of a two part bag permitting free movement of material overthe top of the partition 1 from one part of the bag to the other.

I claim:

1. In combination with a press, platens and partitions between them, a filter bag having two open ends and overlying a partition and having one end on each side thereof, the two ends ofthe bag freely communicating with eachother.v

2. In combination with a press, platens and partitions between them, a filter bag having two open ends and overlying a partition and having one end on each side thereof, the two ends of the bag freely communicating with each other at a point extending beyond the periphery of the par tition.

3. In combination with a press, platens and partitions between them, a filter bag having two open ends and overlying a partition and having one end on each side thereof, the two ends of the bag freely communicating with each other at a point extending beyond the periphery of the partition, and an additional connection between the two ends of the bag passingthrough the partition. i

, 4. In combination with a press, platens and partitions between them, a filter bag having two open ends and overlying a partition and having oneend on each side thereof, the two ends of the bag freely coinmunicating with each other, whereby when the press is closed material is forced freely from one end of the bag to the other.

5. In combination with a press, platens and partitions between them, a filter bag having two open ends and overlying a partition and having one end on each side thereof, the two ends of the bag freely communicating with each other at a point extending beyond the periphery of the partition, whereby when the press is closed material is forced freely from one end of the bag to the other.

6. In a press, platens and a plurality of partitions therebetween, a plurality of filter bags each having two open ends and being mounted within said press, each bag mounted so as to have'one end on one side of a partition and the other end on the opposite side of said partition.

7. In a press.platens and a plurality of partitions therebetween, a plurality of filter bags each having two open ends and being mounted within said press, each bag mounted so as to have one end on one side of a partition and the other end on the opposite side of said partition, the two ends communicating freely witheach other and adapted to permit free movement of material from one end of the bag to the other when the press is closed.

8. In a press, platens and a plurality of partitions therebetween, a plurality. of filter bags each having two open ends and being mounted within said press, each bag mounted so as to have one end on one side of a partition and the other end on the opposite side of said partition, the two ends communicating freely with each other at a point outside of the periphery of the partition.

9. In a press, a pair of platens and a plurality of partitions therebetween, filter bags between said partitions means for filling them, meansfor compressing first one end of the press and for causing re-expansion of that end of the press and for compressing the other end.

10. In a press a pair of platens, and a plurality of filter bags between said platens, means for first compressing one end of the press, and for subsequently opening that end of the press and compressing the opposite end of the press, and for repeating the alternate compressing and opening of the press until the entire contents of the press is finally put under substantially equal com.- pression. i g

11. In a press, a pair of platens and a plurality of partitions therebetween, filter bags each having two open ends and being supported between said partitions, one end of.

each bag lying on one side of the partition and the other end lying on the opposite side of said partition, the two ends of the bag communicating to permit free movement of the contents from one end to the other, means for filling them, means for compressing first one end of the press and for causmg re-expansion of that end of the press and for compressing the other end.

12. In a press, a pair of platens and a plurality of partitions therebetween, filter bags between said partitions means for filling them, means for compressing first one end of the press and for. causing l e-expansion of that end of the press and for compressing the other end, and for continuing the alternate compressing and opening of opposite ends of the press until the entire contents of the press is finally put under substantially equal compression.

13. In apress, a pair of platens, and a plurality of partitions therebetween, filter bags between said partitions, in combination with filling connections one to the other, means for moving one platen in one direction to press, means for reversing the move ment of said platen to move the other platen and the contents of the press in the reverse direction, the pressing movement of the first mentioned platen adapted to compress only that portion'of the press adjacent to it, the reverse movement of the press as a whole adapted to compress that portion oft-he press adjacent the second platen and to permit re-expansion of that portion of the press adjacent the first platen. c e

. Signed at Chicago, county of Cook and State of Illinois, this th day of May, 1924.

JOHN J. BERRIGAN. 

